WILLIAM C. COLEMAN, District Judge.
This is a patent infringement suit, involving two patents relating to concrete floor construction. The individual plaintiff is the owner, by assignment, of both patents. One of the corporate plaintiffs, Lith-I-Bar Company, is the owner of an exclusive license under both patents, and the third plaintiff, W. E. Dunn Manufacturing Company, is a sub-licensee. Neither of these patents has previously been litigated. The earlier patent...
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